Rotating Blade Sieve Screen for Quick Fraction Size Adaptation
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Solution Overview
Problem
Existing sieve screens are limited to screening a single fraction size and require significant modifications to accommodate different sizes, which hampers their versatility and efficiency.
Innovation Solution
The sieve screen design features stationary screening plates with rotatable shafts and blades that can be easily reconfigured by grouping blades and screening plates to accommodate various fraction sizes, allowing for efficient screening of multiple sizes without the need for extensive modifications, enabling flexible use in both utility machines and standalone screening stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sieve screen uses stationary screening plates with rotatable shafts and blades, then the screening capacity and throughput are improved, but the device complexity increases
Solution Approach 1:
The patent applies dynamics by using rotatable shafts with blades that can rotate to actively convey material through the screening slots, transforming a static screening surface into a dynamic system that actively moves material, thereby increasing throughput and screening capacity
Solution Approach 2:
The screening surface is segmented into multiple stationary screening plates with slots, allowing material to be screened through distributed openings while rotatable shafts with blades move material across these segments, enabling high-capacity screening through modular configuration
2Manufacturing precision
If the sieve screen is designed for a single fraction size, then the manufacturing precision is maintained, but the adaptability deteriorates
Solution Approach 1:
The blades are designed to be adjustable in position along the shafts, allowing the screening configuration to be dynamically changed for different fraction sizes while maintaining manufacturing precision through controlled adjustment mechanisms
Solution Approach 2:
The same screening plates and blade components can be used for multiple fraction sizes by adjusting blade positions and configurations, making the sieve screen universal for screening various material sizes without requiring complete redesign
3Manufacturing precision
If the sieve screen requires extensive modifications for different fraction sizes, then the manufacturing precision is maintained, but the loss of time increases
Solution Approach 1:
The adjustable blade positions on rotatable shafts allow quick reconfiguration between different fraction sizes without extensive modifications, reducing reconfiguration time while maintaining screening precision through controlled adjustment mechanisms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the sieve screen's capacity and efficiency by allowing for quick adaptation to different fraction sizes, reducing downtime, and increasing throughput, while maintaining a robust and efficient screening process.
Implementation Method 1
blades which project from the shafts and extend through the screening slots to above the screening surface
Data Source
Figure 1
Figure 2
Figure 3~5b
AI summary
The invention relates to a sieve screen, which can be positioned in a utility machine-operated screen bucket or in a screening station maneuverable with its own actuator. A plurality of screening plates (3) are spaced from each other and establish a screening surface (2), which is provided with screening slots and on top of which can be placed the material to be screened. Rotatable shafts (4) are present below the screening surface (2). The shafts (4) feature blades (5), which protrude from the shafts and extend through the screening slots to above the screening surface (2). Fraction size is adapted to be changed without removing the shafts (4), by re-grouping the blades (5) and a necessary number of the screening plates (3). The blades (5) can be grouped in such a way on the shafts (4) that at least two blades (5) are set adjacent to each other and the adjacent blades are located within the same screening slot.